Abstract


  MULTIFRACTAL ANALYSIS OF SUNSPOT NUMBER TIME SERIES DURING THE VARIOUS SOLAR CYCLES

  S. Kasde, BU Bhopal, sbskasde@gmail.com
  D. Sondhiya , BU BHOPAL, deepsondhiya@gmail.com
  A. Gwal, BU BHOPAL, ashok.gwal@gmail.com

Multifractal analysis based approaches have been recently developed as an alternative framework to study the complex dynamical fluctuations in sunspot numbers data including solar cycles 20 to 23 and ascending phase of current solar cycle 24.To reveal the multifractal nature, the time series data of monthly sunspot number are analyzed by singularity spectrum and multi resolution wavelet analysis. Generally, the multifractility in sunspot number generate turbulence with the typical characteristics of the anomalous process governing the magnetosphere and interior of Sun. our analysis shows that singularities spectrum of sunspot data shows well Gaussian shape spectrum, which clearly establishes the fact that monthly sunspot number has multifractal character. The multifractal analysis is able to provide a local and adaptive description of the cyclic components of sunspot number time series, which are non-stationary and result of nonlinear processes.
Keywords: Sunspot Numbers, Magnetic field, Multifractal analysis and wavelet Transform Techniques.